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SHAFT TURNING LATHE.

Patented Oct. '7, 1890.

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UNITED STATES PATENT FFICE.

HARRISON H. TAYLOR, OF DETROIT, MICHIGAN, ASSIGNOR TO THE DETROITMACHINE SCREW WORKS, OF SAME PLACE.

SHAFT-TURNING LATHE.

SPECIFICATION forming part of Letters Patent No. 438,032, dated October7, 1890.

Application filed May 5, 1890- To all whom it may concern.-

Be it known that I, HARRISON H. TAYLOR, a citizen of the United States,residing at Detroit, county of WVayne, State of Michigan, have inventeda certain new and useful Improvement in a Shafting-Turning Machine; andI declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, which form a part of this specification.

My invention relates to a new and useful shafting-turning machine; andit consists of the devices and appliances,their combinations andarrangements, as more fully hereinafter specified and claimed, and morefully disclosed in the accompanying drawings, in which- Figure l is aside elevation embodying my invention. Fig. 2 is an end view of featuresof my invention; and Fig. 3 is a cross-section on the line m, Fig. 1,looking toward the cutter-head.

I carry out my invention as follows:

A represents any suitable supporting-frame provided with asupporting-bed A.

B denotes a spindle provided with a driving-pulley B and a cutter-head Bhaving a suitable number of cutter blades or knives b and through whichthe shafting 0 passes to be turned. I do not confine myself to anyparticular construction of the cutter-head, as it may be constructed inany suitable manner to do the work without departing from my invention.

D denotes the feed-screw geared with the spindle B, as shown at D.

E is alubricant-supply tank, and E an auxiliary tank located above thebed A and provided with a feeding-pipe e to supply the lubricanttothework adjacent to the cutter-head.

E is a supply-pipe leading from the tank E to the tank E.

G is a rod forming a part of a pump mechanism eccentrically engaged withthe gear D upon the feed-screw spindle D, whereby the lubricant ispumped from the tank E to the tank E.

F is a supportingbracket to uphold the outer end of the shaftin SerialN0.350,650- (N0 model.)

G denotes a work-supporting device, shown in this instance as a vise forengaging the shafting, said vise having a movable engagement upon thebed A.

II denotes a clamping device, which may, as shown in the accompanyingdrawings, 0on sist of an open feeding-nut constructed to engage thefeeding-screw and to be automatically disengaged therefrom.

I is the carriage connecting the feedingnut and the vise. It will beseen that when the feeding-nut is closed upon the feedingscrew thecarriage, with the vise, will be carried forward toward the cutter-headto feed the shafting thereto. The carriage, it will be understood,travels in a suitable way A in the bed A and carries with it in saidgroove the Vise. This construction is, however, immaterial, as I reserveto myself the right to engage the vise and carriage to the bed of themachine in any manner so that they may slide thereon. The parts or jawsH II of the divided nut are each pivoted upon the carriage, as shown ath.

J is an operating-lever, to which one of the jaws is pivoted, as shownat it, while the other jaw is preferably engaged with the lever by alink-connection 712. With the upper end of the lever is engaged a springK, which may bear at its opposite end upon the carriage to open thejaws, when the lever J is free to move. The spring may, however, bearranged in any suitable manner to release the nut from thefeeding-screw.

L denotes a tripping lever notched, as shown at l, to engage theoperating-lever when the nut is closed. The tripping-lever is pivotallyengaged upon the carriage and provided with a retracting-spring L.

Upon the bed is located a stationary tripping arm or lug M, which may,however, have an adjustable connection thereupon. As the carriage is fedtoward the cutter-head, the tripping-lever finally comes into contactwith 5 the tripping-arm, by which it is sprung out of engagement withthe operating-lever J, which is then free to be moved by the spring K,and thus the nut is automatically opened, allowing the carriage to berun back toward ion the end of the bed to re-engage the shafting by anew grip in the vise to feed it forward another length of the travel ofthe carriage. When it is desired to close the nut again upon thefeeding-screw, the operating-lever is lifted to re-engage it with thetripping-lever in the manner already described.

It will be seen that since the carriage is automatically fed thus andautomatically thrown out of operation a large number of such machinescan be run by a single operator.

Where the words movable part appear in the claims I would have itunderstood as covering a feed-screw or any other movable device whichwill advance the work-support toward the cutter-head, as the same comeswithin the scope of my invention.

What I claim as my invention is- 1. In combination, a supporting-bed, atraveling device to engage the work, two rotatable spindles, oneprovided with a cutter-head, the other screw-threaded and provided witha feeding-nut moving in unison with said traveling device, and means fordisengaging said nut from the screw-threaded spindle, substantially asset forth.

2. In combination, a supporting-bed, a traveling device to engage thework, two rotatable spindles, one provided with a cutter-head, the

other screw-threaded and provided with a feeding-nut moving withsaidtraveling device, and means for automatically disengaging said nut fromthe screw-threaded spindle, substantially as set forth.

3. The combination of a work-supporting device, a clamping deviceconnected therewith, a cutter-head, and a movable part which is engagedby the clamping device to advance it (the clamping device) and thework-supporting device toward the cutter-head, substantially as setforth.

4. In combination, a supporting-bed, a traveling vise to engage thework, two rotatable spindles, one provided with a cutter-head, the otherscrew-threaded and provided with a feeding-nut connected with said vise,and means for automatically disengaging said nut from the screw-threadedspindle, substantially as set forth.

In testimony whereof I sign this specification in the presence of twowitnesses.

HARRISON H. TAYLOR.

Witnesses:

N. S. WRIGHT, CHARLES F. SALOW.

